flexibility so they can bring costs down. if we don't change anything, healthcare costs will continue to skyrocket. >> with that provision has raised concern among house centrists. macarthur said they need to turn 16 votes. the white house seems to think it will happen. that's what reince priebus told bret baier. how will it fare in the senate where there is a greater degree of opposition and not as high of a majority among republicans to get this done. >> shannon: another topic this morning the president tweeting about nafta. >> bill: firing up the old twitter machine diving into the nafta issue. he tweeted i received calls from the president of mexico and the prime minister of canada asking to renegotiate nafta rather than terminate. i agreed. in the second tweet subject to